A review of the health benefits, functional properties, and ultrasound-assisted dietary fiber extraction

Dietary fibers are primarily complex carbohydrates and a potential class of compounds that offer numerous health benefits. Dietary fiber has several therapeutic and nutraceutical benefits because of its functional characteristics. It can be extracted from plant resources using different methods like enzymatic, thermal, and chemical. These methods have major drawbacks such as low extraction yield and low quality. Extraction using ultrasound techniques has been implemented to enhance the extraction yield and quality with a substantial drop-in process time and power consumption. Ultrasound can improve many functional properties of dietary fiber like water holding capacity, gel-forming capacity, oil holding capacity, and other characteristics. This review emphasizes the advantages of ultrasound-assisted extraction over other extraction methods for different types of dietary fiber compounds extracted from different plant sources with the difference in their processing parameters. This review also discusses the nutritional and functional properties of dietary fiber.